Collar support



FIG. 1 is a top front side perspective view of a collar support showing my new design;

FIG. 2 is a top rear side perspective view of the collar support;

FIG. 3 is a front view of the collar support;

FIG. 4 is a rear view of the collar support;

FIG. 5 is a left side view of the collar support, a right side view being a mirror image thereof; and,

FIG. 6 is a top view of the collar support, a bottom view being a mirror image thereof. 

CLAIM The ornamental design for a collar support, as shown and described. 